EP1735473A1 - Plants for annealing metal straps - Google Patents

Plants for annealing metal straps

Info

Publication number
EP1735473A1
EP1735473A1 EP04727095A EP04727095A EP1735473A1 EP 1735473 A1 EP1735473 A1 EP 1735473A1 EP 04727095 A EP04727095 A EP 04727095A EP 04727095 A EP04727095 A EP 04727095A EP 1735473 A1 EP1735473 A1 EP 1735473A1
Authority
EP
European Patent Office
Prior art keywords
strap
previous
plant according
electrified
roller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP04727095A
Other languages
German (de)
French (fr)
Other versions
EP1735473B1 (en
Inventor
Fabrizio Recchia
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Officine Meccaniche di Lesmo SpA
Original Assignee
Officine Meccaniche di Lesmo SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Officine Meccaniche di Lesmo SpA filed Critical Officine Meccaniche di Lesmo SpA
Publication of EP1735473A1 publication Critical patent/EP1735473A1/en
Application granted granted Critical
Publication of EP1735473B1 publication Critical patent/EP1735473B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/34—Methods of heating
    • C21D1/40—Direct resistance heating
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/62—Continuous furnaces for strip or wire with direct resistance heating
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum

Definitions

  • the present invention to a plant for annealing metal straps, and in particular to a plant for annealing in a continuous manner a metal strap coming from a rolling mill.
  • the metal straps are generally formed of a metal wire, for example made of copper, aluminum or their alloys, which is shaped in a rolling mill for conferring it a particular section, for example rectangular or square. During this rolling process the metal hardens, so that the strap becomes very rigid and must therefore be annealed for bringing it back to the initial mechanical features.
  • the straps are wound around a bobbin after the rolling process and are annealed in a oven, i.e. in a discontinuous manner, with the consequent waste of energy, time, space and/or human resources. It is therefore an object of the present invention to provide a plant for annealing metal straps in a continuous manner. Said object is achieved with a plant, the main features of which are disclosed in the first claim, while other features are disclosed in the subsequent claims. Thanks to the particular arrangement and measurement of the electrified rollers, the plant according to the present invention allows to anneal in a continuous manner metal straps, also very rigid and having different thicknesses and widths.
  • the plant according to the present invention preferably comprises particular control rollers and/or pulling devices for improving the feed of the strap without suffering sudden tensile stresses which could ruin it.
  • the plant can be provided with a chamber filled with saturated vapor for avoiding the strap oxidation during the annealing, as well as with a tank a duct and drying chambers for cooling and drying the strap.
  • figure 2 shows a first enlarged front view of the plant of figure 1 ;
  • figure 3 shows a second enlarged front view of the plant of figure 1 ;
  • tlie plant according to the present embodiment of the invention comprises at least three electrified rollers 1, 2, 3, the outer surface of which is conductive and connected to an electric voltage generator.
  • the voltage of the second electrified roller 2 is therefore higher or lower than the voltage of the first roller 1 and of the third roller 3, so that a strap 4 passing around these electrified rollers 1, 2, 3 is crossed by an electric current and becomes hot due to the Joule effect.
  • the diameter of the electrified rollers 1, 2, 3 is equal to the thickness of the strap 4 multiplied by a coefficient k greater than 200, preferably greater than 330, and in any case greater than 700 mm, in particular comprised between 1400 and 1600 mm.
  • the electrified rollers 1, 2, 3 are arranged with -the rotation axis substantially horizontal, wherein the rotation axis of the second electrified roller 2 is arranged above or below the rotation axes of the electrified rollers 1 and 3.
  • the outer surface of the electrified rollers 1 and 3 is provided with a replaceable contact ring made of an alloy of nickel or copper, while the outer surface of the second electrified roller 2 is provided with a contact ring made of an alloy of nickel or copper.
  • the electrified rollers 1, 2, 3 are cooled by a liquid cooling system and are driven by motors with a controlled speed, also of a known kind. Said cooling system and said motors are arranged in a support structure 5 which can be closed frontally by one or more motorized rolling shutters 6. From the entrance to the exit of the plant, strap 4 follows a path lying on a substantially vertical plane. Referring to figure 2, it is seen that strap 4 coming from the outside, for example from a rolling mill, reaches a first control roller 7 pivoted to an arm 8 which is in turn pivoted to the support structure 5 and is urged by adjustable elastic means so as to oscillate according to the tension of strap 4.
  • the strap passes around an idle roller 9 pivoted, to the support structure 5 and reaches a first pulling device 10 provided with a pair of rubber belts between which strap 4 is pressed for being pulled inside the plant.
  • the feed speed of the pulling device 10 is controlled for varying according to the speed of strap 4 when it goes into the plant. Said speed can be for example detected by a sensor arranged close to the control roller 7 or it can be communicated by means of electric signals by sensors arranged upstream the plant, for example in the rolling mill.
  • the feed speed of the pulling device 10 is further controlled for varying according to the angular position of arm 8, which is detected by an electric or electronic sensor, so as to compensate changes, if any, of the entry speed of strap 4.
  • the latter after having crossed two opposing idle rollers 11, 12, one of which pivoted on an oscillating arm 13, reaches a second control roller 15 pivoted to an arm 14 which is in turn pivoted to the support structure 5 and is urged by adjustable elastic means so as to oscillate according to the tension of strap 4.
  • the latter after having gone beyond the second control roller 14, reaches the first electrified roller 1 which deviates it with an angle a less than 90°, in particular comprised between 40° and 80°.
  • strap 4 Before, reaching the second electrified roller 2, strap 4 passes through a series of ceramic rings 15 mounted in a mobile manner on plates 16 which are fixed to the front wall of the support structure 5 and are provided with horizontal rails for mounting rings 15 at different positions.
  • the strap Since between these two rollers the strap reaches an annealing temperature, in particular comprised between 500° and 600°, a saturated vapor is let into chamber 19 for avoiding the oxidation of strap 4.
  • the rotation speed of the electrified roller 3 is slightly greater than the speed of the electrified roller 2, in turn slightly greater than the speed of the electrified roller 1, so as to compensate the thermal dilatation of strap 4 due to its heating.
  • Chamber 19 is connected to a tank 20 arranged under the electrified roller 3, so that strap 4 is immersed in a cooling liquid contained in tank 20 when it sses around the electrified roller 3.
  • Said cooling liquid is for example water with a low percentage, for example comprised between 0,1 % and 2%, of drawing oil.
  • Strap 4 is deviated by the third electrified roller 3 with an angle c less than 90°, in particular comprised between 40° and 80°, after which it goes into a duct 21 in which the cooling liquid is let in and flows in the direction opposite to the feed direction of strap 4, so that this liquid is collected in tank 20 for being pumped again into duct 21.
  • strap 4 after it has left duct 21, passes along an idle roller 22 covered by a cover 23 and crosses one or more drying chambers 24 in which compressed air is let it for eliminating the cooling liquid, after which it goes into a second pulling device 25 provided with a pair of rubber belts between which strap 4 is pressed for being pulled out of the plant.
  • the feed speed of the second pulling device 25 is controlled for varying according to the feed speed of the first pulling device 10 and of the angular position of arm 14 of the second control roller 15, which is detected by an electric or electronic sensor, so as to compensate changes, if any, of the feed speed of the pulling device 10.
  • One or more sensors 26 can be arranged at the exit of the plant of checking the size of strap 4. Possible modifications and/or additions may be made by those skilled in the art to the embodiment hereinabove described and illustrated, while remaining within the scope of the same invention.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Laminated Bodies (AREA)
  • Replacement Of Web Rolls (AREA)
  • Electroluminescent Light Sources (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)

Abstract

Plant for annealing metal straps (4), which comprises a support structure (5) for one or more motors suitable for rotating at least three electrified rollers (1, 2, 3) in which the voltage of the second electrified roller (2) is higher or lower than the voltage of the first roller (1) and the third roller (3), so that a strap (4) passing around these electrified rollers (1, 2, 3) is crossed by an electric current and becomes hot due to the Joule effect, the diameter of the electrified rollers (1, 2, 3) being equal to the thickness of the strap (4) multiplied by a coefficient (k) greater than 200.

Description

PLANT FOR ANNEALING METAL STRAPS
The present invention to a plant for annealing metal straps, and in particular to a plant for annealing in a continuous manner a metal strap coming from a rolling mill. The metal straps are generally formed of a metal wire, for example made of copper, aluminum or their alloys, which is shaped in a rolling mill for conferring it a particular section, for example rectangular or square. During this rolling process the metal hardens, so that the strap becomes very rigid and must therefore be annealed for bringing it back to the initial mechanical features. It is not possible to anneal the straps with the Icnown Joule-effect plants employed for continuously annealing the metal wires, since the strap, being rolled and not drawn as the wires, is much more rigid than the latter, so that it does not perfectly adhere to the electrified rollers of these known plants and thus it does not become sufficiently hot for being annealed. Furthermore, due to the high mechanical rigidity of the straps, said known annealing plants for the wires should be modified for increasing the strap pulling force, which however would cause the breaking of the same straps in the annealing zone, where their mechanical resistance is reduced due to their heating. For avoiding these drawbacks, the straps are wound around a bobbin after the rolling process and are annealed in a oven, i.e. in a discontinuous manner, with the consequent waste of energy, time, space and/or human resources. It is therefore an object of the present invention to provide a plant for annealing metal straps in a continuous manner. Said object is achieved with a plant, the main features of which are disclosed in the first claim, while other features are disclosed in the subsequent claims. Thanks to the particular arrangement and measurement of the electrified rollers, the plant according to the present invention allows to anneal in a continuous manner metal straps, also very rigid and having different thicknesses and widths. Furthermore, thanks to the particular trajectory followed by the strap for passing around the electrified rollers, the strap does not undergo breakings or deformations even when it is annealed. The plant according to the present invention preferably comprises particular control rollers and/or pulling devices for improving the feed of the strap without suffering sudden tensile stresses which could ruin it. According to particular aspects of the invention, the plant can be provided with a chamber filled with saturated vapor for avoiding the strap oxidation during the annealing, as well as with a tank a duct and drying chambers for cooling and drying the strap. Further advantages and features of the plant according to the present invention will become clear to those skilled in the art from the following detailed and non-limiting description of an embodiment thereof with reference to the attached drawings, wherein: - figure 1 shows a front view of the plant according to the present invention;
- figure 2 shows a first enlarged front view of the plant of figure 1 ;
- figure 3 shows a second enlarged front view of the plant of figure 1 ; and
- figure 4 shows a third enlarged front view of the plant of figure 1. Referring to figure 1, it is seen that tlie plant according to the present embodiment of the invention comprises at least three electrified rollers 1, 2, 3, the outer surface of which is conductive and connected to an electric voltage generator. The voltage of the second electrified roller 2 is therefore higher or lower than the voltage of the first roller 1 and of the third roller 3, so that a strap 4 passing around these electrified rollers 1, 2, 3 is crossed by an electric current and becomes hot due to the Joule effect. The diameter of the electrified rollers 1, 2, 3 is equal to the thickness of the strap 4 multiplied by a coefficient k greater than 200, preferably greater than 330, and in any case greater than 700 mm, in particular comprised between 1400 and 1600 mm. The electrified rollers 1, 2, 3 are arranged with -the rotation axis substantially horizontal, wherein the rotation axis of the second electrified roller 2 is arranged above or below the rotation axes of the electrified rollers 1 and 3. The outer surface of the electrified rollers 1 and 3 is provided with a replaceable contact ring made of an alloy of nickel or copper, while the outer surface of the second electrified roller 2 is provided with a contact ring made of an alloy of nickel or copper. The electrified rollers 1, 2, 3 are cooled by a liquid cooling system and are driven by motors with a controlled speed, also of a known kind. Said cooling system and said motors are arranged in a support structure 5 which can be closed frontally by one or more motorized rolling shutters 6. From the entrance to the exit of the plant, strap 4 follows a path lying on a substantially vertical plane. Referring to figure 2, it is seen that strap 4 coming from the outside, for example from a rolling mill, reaches a first control roller 7 pivoted to an arm 8 which is in turn pivoted to the support structure 5 and is urged by adjustable elastic means so as to oscillate according to the tension of strap 4. After the first control roller 7, the strap passes around an idle roller 9 pivoted, to the support structure 5 and reaches a first pulling device 10 provided with a pair of rubber belts between which strap 4 is pressed for being pulled inside the plant. The feed speed of the pulling device 10 is controlled for varying according to the speed of strap 4 when it goes into the plant. Said speed can be for example detected by a sensor arranged close to the control roller 7 or it can be communicated by means of electric signals by sensors arranged upstream the plant, for example in the rolling mill. The feed speed of the pulling device 10 is further controlled for varying according to the angular position of arm 8, which is detected by an electric or electronic sensor, so as to compensate changes, if any, of the entry speed of strap 4. The latter, after having crossed two opposing idle rollers 11, 12, one of which pivoted on an oscillating arm 13, reaches a second control roller 15 pivoted to an arm 14 which is in turn pivoted to the support structure 5 and is urged by adjustable elastic means so as to oscillate according to the tension of strap 4. The latter, after having gone beyond the second control roller 14, reaches the first electrified roller 1 which deviates it with an angle a less than 90°, in particular comprised between 40° and 80°. Before, reaching the second electrified roller 2, strap 4 passes through a series of ceramic rings 15 mounted in a mobile manner on plates 16 which are fixed to the front wall of the support structure 5 and are provided with horizontal rails for mounting rings 15 at different positions. Guides 17 provided with rollers are fixed to the front wall of the support structure 5 for making strap 4 run along an alternative path 18 (shown with a broken line) for bypassing the electrified rollers 1, 2, 3, thus passing beside them, when strap 4 coming from the rolling mill must not be annealed, h the way comprised between the electrified rollers 1 and 2, strap 4 reaches a temperature comprised between 160° and 200°. Referring to figure 3, it is seen that strap 4, after it has gone beyond the first electrified roller 1, reaches the second electrified roller 2 which deviates it with an angle b less than 90°, in particular comprised between 4O° and 80°, after which it goes into a chamber 19 arranged between the electrified rollers 2, 3. Since between these two rollers the strap reaches an annealing temperature, in particular comprised between 500° and 600°, a saturated vapor is let into chamber 19 for avoiding the oxidation of strap 4. The rotation speed of the electrified roller 3 is slightly greater than the speed of the electrified roller 2, in turn slightly greater than the speed of the electrified roller 1, so as to compensate the thermal dilatation of strap 4 due to its heating. Chamber 19 is connected to a tank 20 arranged under the electrified roller 3, so that strap 4 is immersed in a cooling liquid contained in tank 20 when it sses around the electrified roller 3. Said cooling liquid is for example water with a low percentage, for example comprised between 0,1 % and 2%, of drawing oil. Strap 4 is deviated by the third electrified roller 3 with an angle c less than 90°, in particular comprised between 40° and 80°, after which it goes into a duct 21 in which the cooling liquid is let in and flows in the direction opposite to the feed direction of strap 4, so that this liquid is collected in tank 20 for being pumped again into duct 21. Referring to figure 4, it is seen that strap 4, after it has left duct 21, passes along an idle roller 22 covered by a cover 23 and crosses one or more drying chambers 24 in which compressed air is let it for eliminating the cooling liquid, after which it goes into a second pulling device 25 provided with a pair of rubber belts between which strap 4 is pressed for being pulled out of the plant. The feed speed of the second pulling device 25 is controlled for varying according to the feed speed of the first pulling device 10 and of the angular position of arm 14 of the second control roller 15, which is detected by an electric or electronic sensor, so as to compensate changes, if any, of the feed speed of the pulling device 10. One or more sensors 26 can be arranged at the exit of the plant of checking the size of strap 4. Possible modifications and/or additions may be made by those skilled in the art to the embodiment hereinabove described and illustrated, while remaining within the scope of the same invention.

Claims

1. Plant for annealing metal straps (4), characterized in that it comprises a support structure (5) for one or more motors suitable for rotating at least three electrified rollers (1, 2, 3) in which the voltage of the second electrified roller (2) is liigher or lower than the voltage of the first roller (1) and the third roller (3), so that a strap (4) passing around these electrified rollers (1, 2, 3) is crossed by an electric current and becomes hot due to the Joule effect, the diameter of the electrified rollers (1, 2, 3) being equal to the thickness of the strap (4) multiplied by a coefficient (k) greater than 200.
2. Plant according to the pre-vious claim, characterized in that said coefficient (k) is greater than 330.
3. Plant according to one of the previous claims, characterized in that the diameter of the first (1), second (2), and/or third (3) electrified roller is greater than 700 mm.
4. Plant according to the previous claim, characterized in that the diameter of the first (1), second (2), and/or third (3) electrified roller is comprised between 1400 and 1600 mm.
5. Plant according to one of the previous claims, characterized in that the first (1), second (2), and/or third (3) electrified roller deviates the strap with an angle (a, b, c,) less than 90°.
6. Plant according to the previous claim, characterized in that said angle (a, b, c,) is comprised between 40° and 80°.
7. Plant according to one of the previous claims, characterized in that the electrified rollers (1, 2, 3) are arranged wit-h the rotation axis substantially horizontal, wherein the rotation axis of the second electrified roller (2) is arranged above or below the rotation axes of the first electrified roller (1) and of the third electrified roller (3).
8. Plant according to the previous claim, characterized in that from the entrance to the exit of the plant, the strap (4) follows a path lying on a substantially vertical plane.
9. Plant according to one of the previous claims, characterized in that the rotation speed of the third electrified roller (3) is greater than the speed of the second electrified roller (2), in turn greater than the speed of the first electrified roller (1).
10. Plant according to one of the previous claims, characterized in that guides (17) provided with rollers are fixed to the front wall of the support structure (5) for making the strap (4) run along an alternative path (18) for bypassing the electrified rollers (1, 2, 3).
11. Plant according to one of the previous claims, characterized in that the strap (4) is pulled into the plant by a first pulling device (10) provided with a pair of rubber belts between which the strap (4) is pressed.
12. Plant according to the previous claim, characterized in that the feed speed of the first pulling device (10) is controlled for varying according to the speed of the strap (4) when it goes into the plant.
13. Plant according to one of the previous claims, characterized in that the strap (4), when it goes into the plant, passes around a first control roller (7) pivoted to an arm (8) which is urged by adju-stable elastic means so as to oscillate according to the tension of the strap (4) and is provided with a sensor suitable for detecting the angular position of the arm (8).
14. Plant according to the previous claim, characterized in that the feed speed of the first pulling device (10) is controlled for varying according to the angular position of the arm (8) of the first control roller (7).
15. Plant according to one of the previous claims, characterized in that the strap (4) is pulled out of the plant by a second pulling device (25) provided with a pair of rubber belts between which the strap (4) is pressed.
16. Plant according to the previous claim, characterized in that the feed speed of the second pulling device (25) is controlled for varying according to the feed speed of the first pulling device (10).
17. Plant according to one of the previous claims, characterized in that the strap (4), before passing around the first electrified roller (1), passes around a second control roller (15) pivoted to an arm (14) which is urged by adjustable elastic means so as to oscillate according to the tension of the strap (4) and is provided with a sensor suitable for detecting the angular position of the arm (14).
18. Plant according to the previous claim, characterized in that the feed speed of the second pulling device (25) is controlled for varying according to the angular position of the arm (14) of the second control roller (15).
19. Plant according to one of the previous claims, characterized in that a chamber (19) is arranged between the second (2) and the third (3) electrified rollers for being crossed by the strap (4) and being filled with a saturated vapor suitable for avoiding the oxidation of the strap (4).
20. Plant according to one of the previous claims, characterized in that a tanlc (20) is arranged under the third electrified roller (3), so that the strap (4) is immersed in a cooling liquid contained in the tank (20) when it passes around the third electrified roller (3).
21. Plant according to the previous claim, characterized in that a duct (21) is arranged downstream the tank (20) for being crossed by the strap (4), the cooling liquid being let in and flowing in the direction opposite to the feed direction of the strap (4), so as to be collected in the tanlc (20) for being pumped again into the duct (21).
22. Plant according to the previous claim, characterized in that said cooling liquid is water with a percentage comprised between 0,1 % and 2% of drawing oil.
23. Plant according to the previous claim, characterized in that one or more drying chambers (24) in which compressed ah is let it for eliminating the cooling liquid are arranged downstream said duct (21) for being crossed by the strap (4).
24. Plant according to one of the previous claims, characterized in that the outer surface of the first (1) and the third (3) electrified rollers is provided with a replaceable contact ring made of an alloy of nickel or copper.
25. Plant according to one of the previous claims, characterized in that the outer surf ace of the second electrified roller (2) is provided with a contact ring made of an alloy of nickel or copper.
26. Plant according to one of the previous claims, characterized in that the support structure (5) can be closed frontally by one or more motorized rolling shutters (6).
EP04727095A 2004-04-13 2004-04-13 Plants for annealing metal straps Expired - Lifetime EP1735473B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2004/000205 WO2005100617A1 (en) 2004-04-13 2004-04-13 Plant for annealing metal straps

Publications (2)

Publication Number Publication Date
EP1735473A1 true EP1735473A1 (en) 2006-12-27
EP1735473B1 EP1735473B1 (en) 2007-07-25

Family

ID=34957490

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04727095A Expired - Lifetime EP1735473B1 (en) 2004-04-13 2004-04-13 Plants for annealing metal straps

Country Status (6)

Country Link
EP (1) EP1735473B1 (en)
AT (1) ATE368131T1 (en)
DE (1) DE602004007833T2 (en)
ES (1) ES2290694T3 (en)
TW (1) TWI340766B (en)
WO (1) WO2005100617A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102367511B (en) * 2011-10-25 2013-04-10 浙江佰耐钢带有限公司 Electric heating roller steel strip continuous heating furnace

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56166336A (en) * 1980-05-22 1981-12-21 Furukawa Electric Co Ltd:The Continuously annealing apparatus for wire rod
JPH08264261A (en) * 1995-03-27 1996-10-11 Nippon Steel Corp Reverse type rolling device
JPH10237557A (en) * 1997-02-24 1998-09-08 Sumitomo Metal Ind Ltd Direct energization heating of metallic plate
JPH10298669A (en) * 1997-04-19 1998-11-10 Furukawa Electric Co Ltd:The Production of softened wire rod
IT1312036B1 (en) * 1999-03-30 2002-04-04 Sictra Machinery S R L CONTINUOUS ANNEALING WITH JUOLE EFFECT FOR MULTIWIRE DRAWERS.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005100617A1 *

Also Published As

Publication number Publication date
TWI340766B (en) 2011-04-21
EP1735473B1 (en) 2007-07-25
DE602004007833D1 (en) 2007-09-06
ATE368131T1 (en) 2007-08-15
DE602004007833T2 (en) 2008-04-17
ES2290694T3 (en) 2008-02-16
TW200538558A (en) 2005-12-01
WO2005100617A1 (en) 2005-10-27

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